Changing the page progression direction from rtl to ltr for multiple epubs

[Bilal93]

Hello dears,

I have over 700 ePubs version 2 in Arabic, and the books open from right to left.

I want them to open from left to right, because the reader I use (SkyEpub) creates a white page after every each chapter on iOS if it is rtl, and I do not want this issue to occur, so I change it on caliber editor to be ltr from package.opf file by changing:
<spine toc="ncx" page-progression-direction="rtl">

to:
<spine toc="ncx">

and the problem is solved. But my question: is there a way to do this automatically for all the 700 eBooks through bulk conversion? I mean is there a way to change all of them to be ltr without opening each one and modify it manually?

If there are ways other than conversion to do this (e.g.: plugin...etc.), please advise.


Thanks for any help.

[HarryT]

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